Ep. 11: The Earth Federation Alliance announces the Zeravire battle while Sandman sacrifices himself to create Sigma Gravion.

The Earth Federation Alliance President announces an upcoming battle with the Zeravire, prompting maids to prepare food for the pilots. In space, Toga and Leele bond while viewing Earth, but Luna is startled by Eiji. Meanwhile, Mizuki and Raven discuss her regrets about working for the Alliance. At the military base, Faye speaks with Alex Smith before ordering the dispatch of all G-Soldiers as darkness covers the sky due to Hugi's Genocidron System. The Gran Knights engage the Zeravire, combining into Sol Gravion, but their attacks fail. The Gran Troopers deploy, and the Knights meet Hugi inside the system. Raven warns against Sandman's trap, but Sandman sacrifices himself by combining with his Gran Divas to form Sigma Gravion. He defeats the Zeravire using Graviton Break. The Genocidron System then creates a Genocidron that has absorbed the neighboring worlds of Selias and Llambias. Lufira appears and stabs Sandman in the chest with a sword, after which Sandman apologizes to Hugi.
Episodes
- Ep. 7 · Toga Combines with Gravion While Eina Sacrifices Herself to Save Him
- Ep. 8 · Eiji searches for Toga while the Gran Troopers prepare for the Zeravire threat
- Ep. 9 · Toga and Leele reunite while Sol Gravion appears to destroy the Zeravire swarm.
- Ep. 10 · Sol Gravion’s Power Reveals Eina’s Secret and Hugi’s Global Threat
- Ep. 11 · The Earth Federation Alliance announces the Zeravire battle while Sandman sacrifices himself to create Sigma Gravion.
- Ep. 12 · Sandman and Ayaka face the Genocidron while Toga catches the wedding bouquet.
- Ep. 13 · White Steel Fang